161780255

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{3323}}^1$

素因数の和:3455

約数の個数: 32

約数和(自身を含む): 241242624

約数和(自身を除く): 79462369

約数列:

[1, 5, 7, 13, 35, 65, 91, 107, 455, 535, 749, 1391, 3323, 3745, 6955, 9737, 16615, 23261, 43199, 48685, 116305, 215995, 302393, 355561, 1511965, 1777805, 2488927, 4622293, 12444635, 23111465, 32356051, 161780255]

約数ペア:

[(1, 161780255), (5, 32356051), (7, 23111465), (13, 12444635), (35, 4622293), (65, 2488927), (91, 1777805), (107, 1511965), (455, 355561), (535, 302393), (749, 215995), (1391, 116305), (3323, 48685), (3745, 43199), (6955, 23261), (9737, 16615)]